3 #define NSSM_ERROR_BUFSIZE 65535
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4 #define NSSM_NUM_EVENT_STRINGS 16
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5 unsigned long tls_index;
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7 /* Convert error code to error string - must call LocalFree() on return value */
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8 TCHAR *error_string(unsigned long error) {
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9 /* Thread-safe buffer */
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10 TCHAR *error_message = (TCHAR *) TlsGetValue(tls_index);
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11 if (! error_message) {
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12 error_message = (TCHAR *) LocalAlloc(LPTR, NSSM_ERROR_BUFSIZE);
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13 if (! error_message) return _T("<out of memory for error message>");
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14 TlsSetValue(tls_index, (void *) error_message);
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17 if (! FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, 0, error, GetUserDefaultLangID(), (TCHAR *) error_message, NSSM_ERROR_BUFSIZE, 0)) {
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18 if (! FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, 0, error, 0, (TCHAR *) error_message, NSSM_ERROR_BUFSIZE, 0)) {
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19 if (_sntprintf_s(error_message, NSSM_ERROR_BUFSIZE, _TRUNCATE, _T("system error %lu"), error) < 0) return 0;
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22 return error_message;
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25 /* Convert message code to format string */
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26 TCHAR *message_string(unsigned long error) {
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28 if (! FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_HMODULE | FORMAT_MESSAGE_IGNORE_INSERTS, 0, error, GetUserDefaultLangID(), (LPTSTR) &ret, NSSM_ERROR_BUFSIZE, 0)) {
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29 if (! FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_HMODULE | FORMAT_MESSAGE_IGNORE_INSERTS, 0, error, 0, (LPTSTR) &ret, NSSM_ERROR_BUFSIZE, 0)) {
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30 ret = (TCHAR *) HeapAlloc(GetProcessHeap(), 0, 32 * sizeof(TCHAR));
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31 if (_sntprintf_s(ret, NSSM_ERROR_BUFSIZE, _TRUNCATE, _T("system error %lu"), error) < 0) return 0;
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37 /* Log a message to the Event Log */
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38 void log_event(unsigned short type, unsigned long id, ...) {
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42 TCHAR *strings[NSSM_NUM_EVENT_STRINGS];
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44 /* Open event log */
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45 HANDLE handle = RegisterEventSource(0, NSSM);
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46 if (! handle) return;
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51 while ((s = va_arg(arg, TCHAR *)) && count < NSSM_NUM_EVENT_STRINGS - 1) strings[count++] = s;
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54 ReportEvent(handle, type, 0, id, 0, count, 0, (const TCHAR **) strings, 0);
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56 /* Close event log */
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57 DeregisterEventSource(handle);
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60 /* Log a message to the console */
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61 void print_message(FILE *file, unsigned long id, ...) {
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64 TCHAR *format = message_string(id);
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65 if (! format) return;
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68 _vftprintf(file, format, arg);
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74 /* Show a GUI dialogue */
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75 int popup_message(unsigned int type, unsigned long id, ...) {
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78 TCHAR *format = message_string(id);
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80 return MessageBox(0, _T("The message which was supposed to go here is missing!"), NSSM, MB_OK | MB_ICONEXCLAMATION);
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85 if (_vsntprintf_s(blurb, _countof(blurb), _TRUNCATE, format, arg) < 0) {
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88 return MessageBox(0, _T("The message which was supposed to go here is too big!"), NSSM, MB_OK | MB_ICONEXCLAMATION);
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92 int ret = MessageBox(0, blurb, NSSM, type);
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